feat: transport resolved reasoning effort

bin/install.js

@@ -2360,6 +2360,10 @@ Direct mapping:
   GSD embeds the resolved per-agent model directly into each agent's \`.toml\`
   at install time so \`model_overrides\` from \`.planning/config.json\` and
   \`~/.gsd/defaults.json\` are honored automatically by Codex's agent router.
+- Resolved \`reasoning_effort="low|medium|high|xhigh"\` → pass \`reasoning_effort\`
+  to \`spawn_agent\` when the runtime/tool supports it. Omit missing, empty,
+  inherited, or unsupported values; do not invent one-off effort literals in
+  workflow prose.
 - \`fork_context: false\` by default — GSD agents load their own context via \`<files_to_read>\` blocks
 - \`Task(isolation="worktree")\` / \`Agent(isolation="worktree")\` → no direct Codex mapping.
   Codex \`spawn_agent\` does not create or bind a git worktree automatically.

get-shit-done/bin/lib/commands.cjs

@@ -4,7 +4,7 @@
 const fs = require('fs');
 const path = require('path');
 const { execGit, platformWriteSync, platformReadSync, platformEnsureDir } = require('./shell-command-projection.cjs');
-const { loadConfig, isGitIgnored, normalizePhaseName, comparePhaseNum, getArchivedPhaseDirs, generateSlugInternal, getMilestoneInfo, getMilestonePhaseFilter, resolveModelInternal, stripShippedMilestones, extractCurrentMilestone, toPosixPath, output, error, findPhaseInternal, extractOneLinerFromBody, getRoadmapPhaseInternal } = require('./core.cjs');
+const { loadConfig, isGitIgnored, normalizePhaseName, comparePhaseNum, getArchivedPhaseDirs, generateSlugInternal, getMilestoneInfo, getMilestonePhaseFilter, resolveModelInternal, resolveReasoningEffortInternal, stripShippedMilestones, extractCurrentMilestone, toPosixPath, output, error, findPhaseInternal, extractOneLinerFromBody, getRoadmapPhaseInternal } = require('./core.cjs');
 const { planningDir, planningPaths } = require('./planning-workspace.cjs');
 const { extractFrontmatter } = require('./frontmatter.cjs');
 const { MODEL_PROFILES } = require('./model-profiles.cjs');
@@ -240,11 +240,13 @@ function cmdResolveModel(cwd, agentType, raw) {
   const config = loadConfig(cwd);
   const profile = config.model_profile || 'balanced';
   const model = resolveModelInternal(cwd, agentType);
+  const reasoningEffort = resolveReasoningEffortInternal(cwd, agentType);
 
   const agentModels = MODEL_PROFILES[agentType];
   const result = agentModels
     ? { model, profile }
     : { model, profile, unknown_agent: true };
+  if (reasoningEffort) result.reasoning_effort = reasoningEffort;
   output(result, raw, model);
 }
 

sdk/src/query/config-query.test.ts

@@ -208,8 +208,28 @@ describe('resolveModel', () => {
     const planner = (await resolveModel(['gsd-planner'], tmpDir)).data as Record<string, unknown>;
     const executor = (await resolveModel(['gsd-executor'], tmpDir)).data as Record<string, unknown>;
 
-    expect(planner).toMatchObject({ model: 'gpt-5.5', profile: 'balanced' });
-    expect(executor).toMatchObject({ model: 'gpt-5.3-codex', profile: 'balanced' });
+    expect(planner).toMatchObject({ model: 'gpt-5.5', profile: 'balanced', reasoning_effort: 'high' });
+    expect(executor).toMatchObject({ model: 'gpt-5.3-codex', profile: 'balanced', reasoning_effort: 'medium' });
+  });
+
+  it('returns runtime reasoning_effort from the same phase-tier source as model', async () => {
+    const { resolveModel } = await import('./config-query.js');
+    await writeFile(
+      join(tmpDir, '.planning', 'config.json'),
+      JSON.stringify({
+        model_profile: 'budget',
+        runtime: 'codex',
+        models: { execution: 'opus' },
+      }),
+    );
+
+    const executor = (await resolveModel(['gsd-executor'], tmpDir)).data as Record<string, unknown>;
+
+    expect(executor).toMatchObject({
+      model: 'gpt-5.4',
+      profile: 'budget',
+      reasoning_effort: 'xhigh',
+    });
   });
 
   it('resolveModel uses workstream config when --ws is specified', async () => {

sdk/src/query/config-query.ts

@@ -222,7 +222,11 @@ export const resolveModel: QueryHandler = async (args, projectDir, workstream) =
   const tier = typeof phaseTier === 'string' ? phaseTier : alias;
   const runtimeTier = resolveRuntimeTier(config as Record<string, unknown>, tier);
   if (runtimeTier?.model) {
-    return { data: { model: runtimeTier.model, profile } };
+    const result: Record<string, unknown> = { model: runtimeTier.model, profile };
+    if (runtimeTier.reasoning_effort) {
+      result.reasoning_effort = runtimeTier.reasoning_effort;
+    }
+    return { data: result };
   }
 
   if (resolveModelIds === 'omit') {

tests/codex-config.test.cjs

@@ -133,6 +133,8 @@ describe('getCodexSkillAdapterHeader', () => {
     const result = getCodexSkillAdapterHeader('gsd-execute-phase');
     assert.ok(result.includes('spawn_agent'), 'maps to spawn_agent');
     assert.ok(result.includes('agent_type'), 'maps subagent_type to agent_type');
+    assert.ok(result.includes('reasoning_effort'), 'documents reasoning_effort transport');
+    assert.ok(result.includes('do not invent one-off effort literals'), 'keeps effort policy centralized');
     assert.ok(result.includes('fork_context'), 'documents fork_context default');
     assert.ok(result.includes('wait(ids)'), 'documents parallel wait pattern');
     assert.ok(result.includes('close_agent'), 'documents close_agent cleanup');

tests/commands.test.cjs

@@ -1117,6 +1117,21 @@ describe('resolve-model command', () => {
     assert.ok(output.model, 'should resolve a model');
   });
 
+  test('includes reasoning_effort when selected runtime supports it', () => {
+    fs.writeFileSync(path.join(tmpDir, '.planning', 'config.json'), JSON.stringify({
+      model_profile: 'balanced',
+      runtime: 'codex',
+      models: { planning: 'opus' },
+    }));
+    const result = runGsdTools('resolve-model gsd-planner', tmpDir);
+    assert.ok(result.success, `Command failed: ${result.error}`);
+
+    const output = JSON.parse(result.output);
+    assert.strictEqual(output.model, 'gpt-5.4');
+    assert.strictEqual(output.profile, 'balanced');
+    assert.strictEqual(output.reasoning_effort, 'xhigh');
+  });
+
   test('fails when no agent-type provided', () => {
     const result = runGsdTools('resolve-model', tmpDir);
     assert.ok(!result.success, 'should fail without agent-type');